I would suggest a 4" cast crank (they're cheap these days) & NO ONE who has ever stroked a SB has regretted it. KB 356 pistons. EQ mag heads with the LA intake bolt pattern. The Don Taylor basic rebuild manual is cheap second hand on eBay & after being on SB's for decades I still refer to it on occaision. The Jim Sylagi (sp) stroker book is OK but has quite a lot of high dollar info that I will never use but it does have some good info in it. Achieve quench (.035"-.040")