My 5.Old has 136k and has never had any problems with the motor, no burnt or loss of oil. The only problems ever encountered on my foxbody were p/s problem, rack & pinion, tranny and radiator. You can call them ancient but most people I know with 5.0's have 100k+ with no engine problems, only there crappy driveline!!! (in my expiriences)
Go American Nick!!

Glad you have seen the light