55 second gen fenders vrs a 58?? Wider?

[jaws61]

Hey Guys
I"ve been doing a tonne of reading and thinking of doing a Trailblazer swap for a DD. In saying so I've read up Dug224 build up as well as rustymarco and Ricott builds. Thanks for the build progress and write ups. You guys did a awesome job!!!!!!and I wouldn't be here with out you guys.

My question is the 58 fender wider then then 55,56,57 fender because I know there is a issue with fenders hitting the tires? I really love the 57 style and its what I'm going to have and I want to lower this truck as far as I can go but want to know if I should even start with this or just do a clip instead on the original frame?

I'm pulling 5.3 out of a 2003 Silverado as we speak,

Is it also with the time looking for a TB that had a V8 in it to save time or get lucky enough to get a 6.0? Is that the same tran id want in the TB too?

Thoughts and opinions are more than welcome!
Thanks