i want to put a new camshaft in my 84 tempo. its the 2.3l hsc. i found and edelbrock performer plus camshaft/lifters/lube package on carparts.com. however, i dont know which model is for my car. there is the 2106, which says for 1963-1978 without somethin, 1963 - up, and then there is 2122 which say 1985 - up. also, would i have to pull the motor to put the new cam in, or could it be done without liftin it. would it be a day project or a weekend project? please help. i really want to do this. and if anyone knows how i can get some more hp, please let me know.