I would love to see some custom porting and a custom pipe from arlan on a blaster. Bet it would be sick.
He can mix and match too as well as dyno tune. I'm sure it's not cheap, but hey. He has some dynos of his work. He got 31hp on a ported stock cylinder with a 30mm carb.......pretty good numbers considering it has a real nice torque curve on a stock cylinder and going with a 30mm carb preserves the torque. LASX runs the Diamond cylinder and runs a 30mm on his race Blaster.
His 240 kit is a little unknown but he had it at 33hp or thereabouts. I'm sure it's no different than anything else though. Using an LA Sleeve/CT cylinder has a better port layout and will gain more power. I think he offers hot rods stroker kits. He has the dynos and other stuff on his website. He is somewhat vague because it's all customer specific on setups.