Yep, I'll 3rd the exhaust cam sprocket. Also, if you can spring it, send him the entire rack of carbs. Overflow tubes, power jet pack, and the exhaust cam sprocket work really really really well together.
If I remember correctly our Connie already advances the timing too soon now and this Factory Pro Advancer makes it even worse than stock, n so it is not a good thing to use.
I can't say anything bad about the one that I've got installed; had it long before Steve came out with the Cam Sprocket or the 7th gear unit both of which I've got. I'd have to pull the FPIA out to see what difference I can notice going back to stock on the spark maker; but I'm too lazy to be bothered with that. BTW I run low octane gas and do not detect a hint of ping either.