Not really, Its a cast iron block SBF, just everything we have done has had weight in mind. It gets 90lbs lighter when the interior comes out and the race seat goes in. All steel body. Here is a link to the mustang build: http://www.pro-touring.com/showthrea...el)&highlight=

We just updated our vehicle weight lists from the shows we attended in the past 4 months. Check it out:
(As usual, it's easier to search and sort the weights online at: http://www.ridetech.com/tech/coiltech-2/ :) )

http://www.ridetech.com/images/vehicle-weights-2.gif