Tincup's 63 Dart w/5.7 Hemi

MoparPowa said
My measurement was done with the wheels under the car and centered as best as I possibly could.. I have noticed with these wells that it would be better to have them further in then out because of how much the outer wheelhouse leans in and the inner goes practically straight up. The car is mini-tubbed, not full tubbed. Having them further in means they can always be spaced out as well, although I would really prefer to just do it right and not have to space the wheels. I'll be going with Bill's rear suspension setup so pinion angle will be adjusted through the upper links, not the pads. Your spring perch measurement matches mine which is good! Can you list your wheel and tire specs for me(offset & backspacing)?

Here are some pictures of how the wheels are centered when I took the 54.75" measurement. As well as just a couple other pictures of the car.. the stance isn't right in the front or rear, so ignore that for now.

http://img19.imageshack.us/gal.php?g=dsc01365la.jpg

Nice looking car, It's nice to see someone else doing an early A Pro Tour. One trick I did was to duct tape 2 pieces of 1" thick wood to the outer chassis rail to rest the tires against, so I knew I would have 1" of spacing on the inside. My rear wheels are 18 x 10 with 6" BS, the offset is included in the backspacing ( my wheels are 10" wide with 6" BS = 1" positive offset, because if you moved the mounting surface back 1", my wheels would be 5" + 5" = 0 offset) check out this link; http://www.tirerack.com/wheels/tech/techpage.jsp?techid=101.
If your wheels are 10.5" with 6.8" BS that would give you 1.55" pos offset. So if we add 1.55" to my dimension of 53.5" gives us 55". And like I said earlier, my rear probably should have been a 1/2" wider, ( I have plenty of clearence to the frame, the spacers would only be for apperance) so add that to our number and we get 55.5". Add 1/4" to your number to be safe, 55" wide.
You do what you think is best, but if it is too tight to the chassis they will rub whenever the body leans. So TRIPLE check those numbers... Good Luck.