There is really nothing that interchanges as far as motor is concerned.
The trans will also take any upgrade other w-cars can have.
almost any w-body will match up for suspension and brakes.
they also include the Monte Carlo's, Grand Prix, Bonneville's, GTPs
the brakes can also come from camaros, vettes, Gxp's, and transams,
that's about it for cross-compatibility except for interior components.
Are you talking about the HD upgrade? Seems there's lot of work involved with that and going full bore on that probably equal to the car's worth alone.
not saying it wouldn't be nice, but with a NA 3.5 kinda overkill unless your brutal on the acceleration etc, or drive in the lower gears.
Yeah the HD upgrade, it's no too bad of a job from the tutorials I've read, and there's a few for $200. Granted it would pretty much be overkill for a 3.5l, but would offer some peace of mind.
You can also throw in a shift kit. I've read nothing but good things about the Transgo. Makes downshifts faster, and shifts in general quicker. Also helps its lifespan. Upgrade to Dexron V...lol I guess there really isn't much for the 4t65-e...
Is there any model that is intercangeable with a 1998 Oldsmobile Intrigue Radiator