A pity the truck couplers don't come with whiskers.
Im retrofitting my old stock with truck mounted couplers with Bettendorf trucks with kadee couplers, much easier that way. Though i am finding its not entirely effortless as i need to cut off the knob that the old trucks slide onto and file the edges of the old screws so that they fit properly.

Well the original box got thrown years ago, but i don't know if its a Silver Streak, its just a plain DC engine with motor and light and thats about it.

I have however placed an order for a DC Bachmann CP Rail(Multi-mark) GP35 loco, so it should prove to be a nice addition to my Canadian fleet 

I just started my conversion of my old Bachmann HO sets from the 80's. I'm going my CP Rail set first and i just finished converting the locomotive.
And i think the conversion worked out pretty nicely 

Before:


After:


Though switching trucks have been troublesome to say the least. A couple of lost springs that flung away and one truck with coupler which had the lid burst off and sent the spring and dowel flying into oblivion.
And i just found out i need to buy a different coupler for the Caboose, turns out that Kadee's conversion charts don't streach back far enough. According to it i needed 37's for all cabooses, but it turns out i am going to need 32's instead because of the higher elevation of the caboose.

This hobby can be tedious at times. 

Ok, thanks Bach-man

I was just looking at one of the CP Rail GP35 loco's bachmann has, i cant seem to find any detailed information on it.
So does anyone know if the CP Rail GP35 diesel, product number: 61706 is a standard DC loco?

Are you sure? the mounting screws for the trucks should be right under the cars, usually one big screw per truck.

mmmm, i was going to go back to just using the old x2f's, until i found that my layout im building has two sharp curves for the x2f's since they do not stay centered and want to push off to the side causing the cars to derail when i am running the train the opposite direcion.

What to figure out for the loco's, the cars are pretty straightforward, ive decided to simply just replace the boggies on them with Bettendorf trucks w couplings.

Does anyone know if the Kadee "Bachmann-Plus F7 Conversion" kit would be compatible with my old F7's from the 80's?

What is the mounting height for the Kadee couplers? I don't want to have to waste money just to find that the trucks are too low to mount Kadee's

Ok, will the default screws holding the X2F's in place be large enough or will i need new ones?

Also another question on the side, is Bachmann track compatible with Roco tracks?

So would installing a Kadee #5 be as simple as removing the screw, lifting out the X2F, plunking in the Kadee and putting the screw back on?

I just took and dug out my old CN and CP Rail bachmann sets that we bought when i lived in Canada(living in Sweden now) in the 80's after having been tucked away in the attic for years. Over the years many of the couplers have broken, and when looking for replacements i found that the old X2F Horn couplers have been replaced with knuckle couplers.
So the question is, how do i go about replacing the old X2F with modern knuckles? And which kind of knuckle couplers should i use? I see bachmann makes their own, but i have heard a lot of good about the Kadee couplers.