Crate small block
I have no experience with Jasper create engines.
I know a few people that have spoke well of CME creates.
Screw the create option and contact MRL and speak with him. A few minutes in the phone with Mike will yield better results for no real cost difference.
If you just want to click an option, MRL's site also has a few create engines, big and small block choices.
CLICK HERE--->
MRL Performance