I am surprised.... I wouldn't have expected any 351W to fit without shock tower relief unless the exhaust manifolds were left off. I thought they were too wide? Seth
Its not like you have to change them every day or anything...so it's not such a big deal. I just remove the valve covers and you'd be surprised how much more room you have to work with...takes me about 45min to swap plugs...but then again I'm not rushing at all!