hulkspeed has a good rep, ive never dealt w/ them though
front PEM bolts directly to OEM xover
you'll have to disco the dogbones and tilt the engine forward to make it easier on yourself (think glorified plug change as far as difficulty goes)
the only issues i see you having are the rusty ass bolts in the OEM connections worse case scenario, goto Lowes (the sell SS Grade 8 bolts, HD doesnt last time i checked) and grab some replacements
if you dont understand any of that, you may have issues doing this mod LOL
stock gaskets SHOULD work as long as you dont mangle them during the swap. the PLog swap is alot easier just b/c of the location.
If you have all your treehugger equiptment still in place (egr & such) it'l make things a bit cramped for room. theres always the $0.50 egr delete mod though.
if you dont have e-testing/inspections remove the egr, cut the tube and remove it, replace w/ hitemp rtv and 2 coins! no more dirty hot air thru the blower!!!