The LT1 in a Caprice probably has iron cylinder heads-----------

Even with the amount of keyboard experts harping about the opti spark-never had an issue with that----------

reverse flow is great -------
get all the wiring even dashboard studd, computers ( ecm and body ) key (key has an resister in it that mathes the body control puter) wiring back to fuel pump and possibly the complete tank system----------

transmission?????????

averaged about 30 LT1 builds per year for several years------we added splayed 4 bolt main caps-----
Have done manifol mods to put distributer in rear and there are pics on here somewhere of that