Hi Steve,
The 427R is fine and comes set up well. I am in the car business so have access to all the shop equipment. The MSD setup is on the money, 19* initial and 31* total. I'm leaving mine there for a couple thousand miles and will bump a couple deg. then. Chip at 6000 seems early, hits it pretty quick. Seems like it would like more but Todd at Roush (and the dyno chart) says it doesn't do any good to spin it faster.
The carb set up is ok. I cracked my secondaries .025 - .030 or so and cleaned up the idle some. I was really trying to overcome a hickup on off idle cruise 2nd thru 4th and it did help. The carb does percolate after shutoff. You can see it squirting with the aircleaner off. Don't know if that could happen and cause that light cruise hiccup or not. I'll talk to Roush and see if they recommend a spacer/insulator. Kinda surprised it did not come with one since the problem is evident.
Are you orering with a clutch? Drop me an email.
brucet@donmcgill.com