Is it practical to digitally modify the body sheetmetal in Photoshop? Can I chop the roofline, section the midsection, stretch the cab, etc? Cut and paste different rim/tire combo's? Scale the rims/tires to get the basic look and rake I want?

I was going to scan photo's and import them into AutoCAD, cut and stretch, then render the modified drawing. PITA way of getting there if Photoshop can do the same.

Are there cheaper but still functional alternatives to Photoshop, even the "Educational" version still costs $320.

Thanks, Mark