Just installed my 304 Coated PLOG, AL605s and 10.4mm wires. Install was gravy on the powerlog. The plugs and wires left me with a few nicks and scratches but I'll live.
There's a lot more room on the back of the 3800 than the 3400, but the front plugs on the 3400 are much easier to work on. I guess they both have their maintenance difficulties.
Overall, I'm really pleased with the gains. No more light KR except at WOT at the top of each gear. I assume that it's leaning out. Pulls great through the entire rpm range. The engine seems a little louder inside the car too.
