ftyler: It's my 2nd 292 build up too. But it took me 25 years to get around to it and almost 3 years to complete. [First one went together in a summer in '77]
Badger pistons were cast. I found out that forged pistons are now real hard to find. They are not the LPG ones.
BTW, the Offy intake is supposed to be better for low end torque, while the Clifford intake is supposed to be better for higher end RPMs.
Regrets? Well my machinist freaked when I told him I had put in Rhoads lifters. I thought the cam was going to be lumpier than it is. He didn't think I needed them. (or the expense)
Also I'm running the hi-volume oil pump. Larry Page, "Twisted6" on the Inliner forum, told me he had no problem with the faster pump on a street machine, but the concensus is that you don't need more than the regular oil pump or you run the risk of sucking up all the oil from your oilpan and running dry. 6 Quarts in a 292? -- that's gonna take some doing. But even Santucci recommends the standard volume oil pump.
The 292 L6 has a lot of grunt on the low end.
Right now -- about 600 miles into break-in -- I'm still using points, but I have a fresh Accel blueprinted distributer I'm going to rig with Pertronix Ignitor II.
Chevy283: Mileage should be about 12 MPG, but it's about 6 right now -- which has me working on some break-in/tuning issues.
FastTruck: Somebody on the Inliner forum has a dragster with 2 292s inLine, one each fore and aft.