Leave em alone man, you are going to go thru like 3-4 hours of work if not more to do them. And 30#s are huge for a stock motor. What are your plans? 24# injectors will go a long way on your car. My boss had ported L98 alumn heads, Ligenfelter Super Ram intake, a bigger cam, larger throttle, plus other stuff and he was running on 24# injectors fine.