Test drive at least 4 Preludes before purchasing one because I drove a 01 prelude with like 50k on it and it drove like shit compared to a 97 prelude with 120k. The 01 prelude looked like it was brand new kinda like wut your describing with this car. Just my advice.
About the clicking not to sure. I kno my friend had an older prelude and his clicked and he said it was natural and it was the fuel pump. Not sure tho