SB or BB a body debate

street/drag car (a street legal drag car) is my plan with it- SFC's, 6pt cage with door bars (dad's handicapped), it's getting a 68 B body 8 3/4 swap right now, don't want to remove the fender wells, just a general stiffening of the chassis oh and a 275/60 MT drag radial

ANY stroker is pricy- (just did a quick Ebay search and added up a decent amount of parts at $2,700- rotating ***/ RHS magX iron heads/ MP flat tappet cam)I would have to sell/part out my 350hp aluminum headed 83 Mustang- of coarse machine work will be in the $350 range (my block is clean and bored .030" and has pretty much all new internal parts) so I think I would be ahead so to speak with the small block at $3,500 or so for a long block capable of 550+hp