I am sure others will chime in who know more than I about this but here is some things you may need.
What are you starting with? If it is a slant then things like bigger brakes, T bars and rad would be nice. Going to need some motor mounts.
www.engine-swaps.com should have what you need. Or I think there may be another place that has them for a little less but don't remember the name.
Going to need a BB trans and the drive shaft length adjusted.
Headers or manifolds.
Thats all I can think of but I am sure others will chime in with more.
Good luck