2V Long Tubes-Worth It?

[SLOW 97]

I'm thinking of getting MAC longtubes w/ a Pro Chamber but I hear any longtubes on a mod engine are a real pain in the @$$. Has anyone done this themselves or had it done? 5.0 Mustang said it's worth the $475 they paid for installation becuase you actually have to unbolt the engine from the mounts and roll it up on each side of the block so you can get the headers attached to the heads. They made a solid 14 RWHP though.