hello, i am about to change the gaskets on my 0.60 block with stock e7's. i want some good gaskets that will last a while. how good are these copper gaskets. summit says you can reuse them up to 5 times, i really don't car if i can reused them or not, i just want a good tight seal. will 351 gakets fit a 302 because milidon only showed one for a 351 but the ad under that one just said all SBF's. i searched and came up with little info
