Which header lengths are most common or easiest to put on?

 

that doesnt matter for your case. You need to find out what is actually available for the 3.4 F body. I am extremely doubtful you will find any longtubes from any company. I would bet the ONLY option you have is midlengths from Pacesetters more than likely. And overall, they are not worth it on a 3.4.

 

actually i think ive decided to save my money and sell this next summer to get a Z28. cuz i figure it would probly cost around 1500 to go from my stock 95 (160hp) to even a 95 Z28 stock (275hp)

 

Borla Adjustable Catback for the best V6 sound -- you can adapt one from a different year if one for your exact model year doesn't exist. I am very happy with mine -- much better sound than the Z28 muffler my RS came with from the factory...

 

There are NO 3.4L F-Body LTs available, unless custom, AFAIK. Pacesetter is one of the few options available (not LTs).