[DonC]

82:
Got a flat tappet w/hyd. lifters in the 428 built for me by Joe Lapine of Danbury Competition Engines. Asked him about rollers when I contacted him about the build and he felt, as others do, that the small increase wasn't worth the potential problems that "in some cases" crop up with them. During our discussions I also told him I wanted and engine with 450 at the crank that would last for 100,000 miles before I had to futz with it so that may have had a bearing on his choice for the build.
15000+ miles in two driving seasons and still going strong.
DonC