How do you determine "ride height" to make suspension mods??

You will need a set of tires/wheels for the mock up.....I bought some junk wheels/tires off CL that were close to the height I wanted to run.

A 335 tire is going to need a 12" wide rim. Rims get expensive after 10" wide since cost is a concern. No problem running an 18" rim on the front, stick to about 26" tall tire (35series).

I was figuring that the rear rims where going to have to be widened to 12" which I was thinking on having a set of the Bullet rims stretched to the 12" (yes added cost, I know but at this point I have tossed the budget way out the window, LOL)

Hmmm... now to find a set of used rims and tires on CL in 18" (I guess ford pattern) and as close to a 335 as possible.... I will have to see what that will cost versus just buying the rims and tires now....