Crate Engine options for 1966 c20

[1966chevyc20]

Hi, I have a 1966 chevy c20. Removed the tired old 283 and am looking at crate engines. Originally I was interested in the goodwrench 195 hp version, but after more research i stumbled upon the L31 crate engine. For about $500 more i think a roller cam and better heads is a better deal than the 195hp setup. Now for questions;
Will my SM420 bolt up to the L31 as far as bell housing bolts?
Will I need a different flywheel? Clutch?
Does the L31 have a tapped hole for the clutch linkage/z-bar pivot ball?

Besides that I know I would need a different intake, melonized distributor gear, and an electric fuel pump. Any help would be appreciated. Thanks