Moparmuscle article.

450hp with headers, intake and cam. STOCK rebuilt 383 longblock. No porting, no fancy pistons. A little machine work to keep the compression right.

The forged piston kit is around $650 thru Summit.

http://www.moparmusclemagazine.com/techarticles/155_0209_383_engine_restore/photo_14.html

http://store.summitracing.com/partdetail.asp?part=FEM%2DCSMHP738%2D300&autoview=sku

Just lower your CC's on your heads to about 80.