the 130T (10.5" 68+) bell will fit, but brother it is tight. you'll need to mod the z-bar, or i think somebody now makes one (tti maybe?). and the real estate for exhaust gets scarce. expect a fair bit of pound to fit, paint to match.
at 300hp, you can safely use the 122T smaller stuff and save yourself a bit of headache.
if you can afford a hydro clutch, it takes out a lot of the complexity and frees up a fair amount of space.
doug's fit great, even with the 4spd stuff, but might hang a little low if you're setting it up for that T/A vibe, not sure on tti's but i imagine any full length header will be low. spitfire/sandersons are the best bet. but considering your HP goal, you can run manifolds and that saves you some $$ while not being as tight on space.
the external dimensions and placement of the trans are unchanged, so no worries there. it's really just the bell, linkage bits and exhaust.