Thanks man, i love big cams at idle
Im not sure how much your looking to spend on SRT manifolds, but have you considered the OBX SRT8 Headers on ebay? For $550 they come with connection pipes, although you'll have to figure out your cat solution. Once all was said and done i bet i spent at close to that on getting the stock SRT8 manifolds to work.
When i installed the SRT manifolds there was 1 bolt i couldnt get to on the drivers side. I left it out for about a year with no issues, but when i pulled the heads during the cam install i put it in. I recall using several different sized ratchets, wrenches, and i think i used a universal joint extension as well. I think they were all 10mm bolts?
Aside from that i just remember it taking time and patience. A lot of laying on top of the engine and feeling for bolts. I also think i removed the drivers wheel and wheel well to access a couple bolts; but I do not think that it was required.
I also thought about modifying the manifold to keep the EGR, but the thought of spending money to allow exhaust to go into my intake was not very appealing. I needed a custom tune anyway, so it was cheaper for me to just have it turned off.
After the cam install i must have bent the EGR tube slightly. Once reinstalling it all there was a substantial vacuum leak where the EGR tube enters the intake manifold. There's really nothing to secure this tube at the intake manifold, so if you accidently bend the pipe be prepared to spend some time triyng to get it all worked out. I ended up getting a billet tech EGR delete kit. Kinda pricey at $30 for just a tab of metal, but it is nicely made and works great!