I'd go with the ACE deal. its oem fit and small, takes no mods and is a fair price.
Givin that, I find it hard to believe its 160 amps but even if its say 125 amps, still a good deal.

I traded in my lifetime warranty alt at Kragen last years and the current cost for a kragen alt was
around $150. and thats a POS mexican rebuilt! They hate me at Kragen because my 85 has been
in my household sence new and everything on it has there lifetime warranty. Every 3~4 years I go in
for my free waterpump, Alt or starter.

I did go to an alternator shop once to see about uping the output on my oem alt and the guy told
me the diode plate was only large enough for about 110 amps? thats why the Ace claim of 160
sounds fishy. Maybe in last few years higher power small diode have been made?