Yh I believe the fitment would be the same being a fellow B series. Another guy I spoke to is using supertech valvetrain with no issues so far. Yeah and the cost! I can't remember if there was a big price difference in staying 81 or going .5 extra. From what I've heard the skunk2 valvetrain is a pretty common choice, mainly of the Pro series they run. I've got sk2 retainers in mine with no issues, can't personally comment on the valves/springs.