If you track your Gen I car without a power steering cooler, I'll wager you'll have the power steering pump fail, especially if its a decent road-course with lots of turns.
I lost the power steering pump on my Gen I car while on-track at Sears Point - had to chop the throttle because a mustang (trying to keep up with me) started blowing coolant - I cut the throttle and veered away from his trail of coolant, then tried to make the 90-degree right turn (turn 5?) prior to the carousel, and the steering wheel "bounced" as if against an invisible end-of-travel stop. Seems the lower rpms and failing pump lost my boost, and I almost went off-track, as I didn't expect the sudden inability to turn. If the rpms were high, it was OK. It made for some interesting driving the next week before I replaced the pump - any attempt at a quick turn (such as out of a store parking lot onto a busy street) was dangerous, as the lack of steering assist until the rpms were up made quick turns an iffy proposition.
Right after that, I bought the Gen II dual-pass power-steering cooler ($60 back in 1999, as I recall) and installed it on my Gen I. Then, I noticed the Roe Racing cooler was about the same cost (i.e. cheap) and was a bigger four-pass unit, so I ordered it and put it on later.
One of the first modifications I made to my Gen II car was the Roe four-pass power-steering cooler, and synthetic power-steering fluid.