Lifters for Series V Alpine, 2/3 the height of stock, less weight

[Steven Silverstein <milano164@mediaone.net>]

I have a new set of lifters for my Series V which have been cut down in
height, roughly 2/3 as tall as stock.  They came with the race car.

Has anybody run a set of lifters like this?  The notes on the engine state
that the lifters were lightened by 30%.  I suppose these would work.  Are
there any drawbacks to using these?

Also, does anybody run Aluminum Valve retainers?  I have a set of NOS for
the race car but the machine shop I have work done really thinks I should
steer clear of the aluminum retainers.  I guess they had bad luck on a Chevy
motor or two...

Steve Silverstein