if its the upper chain tensioner it should be a big bolt with a piston in one end and a 27 mm hex head on the other ... normally cost about £40 ish from euro car parts no difference between obd 1 and 2
VeedubVR ...yeah a spec list and a quick photo would be good mate even wot it looks like now and a list of work to be done .... and have added you into the pot as well