John
Im an individual restorer, builder, engine builder who has longstanding alliances with many engine people. My group cnc machines the billets all other processes are done by 3 well known firms in California. Yes, strokers can be done. The standard crank we are doing is 4". This is a new offering and will ramp up according to demand. We have one engine running with these parts turbocharged on methanol in a drag car making 1190 hp 1050#ft torque with the LS head on the dyno. Thanks for inquiry, happy to respond to questions.
G.H.