Checkout W-body store they have a complete top swap and all the gaskets available in a kit ,as far a a cam swap it is about an 8 out of 10 on difficulty with the engine still in the car and the head swap is also fairly hard ,you would need some experienced help so you do'nt f---k things up,a kit from ZZP is around $1400 and is easier to install whichever you decide you will probably need some help.Chico.(Pops)