i am i8 years old and i am rebuilding a 327 and its my first. i want around 300hp and i was wondering if i should put roller rokers on? Whats the differance between a solid cam or roller cam and which one is better? there is a gear drive for the timing and its says noisy and i was wondering if its a loud blower sound or what it sounds like or if i should use it? so if theres any tips on things to help me out let me know. i want that first time to be a special one.