1) most aftermarket wheels with a 4.5 bolt circle will fit. The exception would be if you bought Ford factory rims, some of which are also 4.5, because they have a smaller center register than a mopar.
2) do you want more of a handling approach or dragster approach. You can get pretty wide rubber up front, but if your running steam rollers out back, it changes the look some.
What tires are you wanting to run? You can put a lot of rubber in an E body wheel well without a mini-tub. I run a 10" wide rear wheel with a 26" tall, 12" wide tire and have done no work to the wheel tubs. I could easily fit a 28" tall tire in there too. I did need to move my springs in 1" per side though as spring location may be a bigger factory than wheel well size. E bodies have spring set ups that are splayed, or wider at the back than at the front, and this impacts wheel size. The most popular and easiest to fit combination is 235/60 front on a 7 or 8 inch rim and 275/60 out back on an 8" rims. With a 10" rim, you could get 295 or 305 pretty easily, and may be able to fit a 325 with the spring move.
