aftermarket turbo kits

[IndyIan]

Yep...3320 engine is 100 cid, the 3520 and 3720 both use a 91 cid engine
(www.tractordata.com)

That might be a warning that the 100 cid version didn't have thick enough cylinder walls for a turbo to be added.

 

[yelbike]

I'm sure many items might be the same between a turbo and non turbo engine. To assume the whole engine is the same would be foolish IMO. Crank journals and bearings, might be different in size as well as many other thing like larger radiator heavy transmission.

For example a base model WT chevy truck has the same control arms as the top model LTZ but the trany and diff are smaller the the top model.

I think in the long run upgrading tre tractor instead would more economical.
I've been told lots buy race mecanics to just leave stuff stock if you care about longivity and realiability.