Swap or rebuild?

If your turning the wrenches yourself you could wake the the 318 up pretty well. With only $1k in the budget, a top end upgrade may fit the bill. Select your heads/valvetrain combo around your goals & then select the cam to match, not the other way around. I saw Crackedback is kicking around the idea of porting some 302 heads if there was any interest from members, he may be worth reaching out to. The 318 is a fun mill, good luck with your project.