another 383 build up Q

Sounds like a decent plan. You may want to have him do a little looking tho. There are new stronger stroker cranks for that application that cost under $600. Some use a different rod type too, but they are out there. May be similar $$ when having yours welded, or indexed and offset ground. Depending on his parts choices, you should end up with much closer to the 500 level. Oh, also, no B engine was ever offered as a six pac, and they all share the same basic casting design. Keep us posted.