IIRC the H2 series because the HX50's (50,52,55). The H2E was used on some versions of the L10 and the L10 eventually became the M11 on which the HX50 could be found.
Visibly it looked about the size of an H2E. I didn't have time to look on the Holset disc to find the scoop on the turbo we got, it came in at 5 til 5 and I wanted to get home! I'll look on Monday to see what housing and such are on it. For what I'll have in the turbo it's hard to pass up. Gotta love getting parts at cost, you guys would hate to know what I paid for my brand new Alliants.
Dave....I will fab my own kit.
.....any turbo can go "boom." Old school??? How old do you think the H2E's are.