Just had my 1987 944 Timing, Balance belts & rollers done, along with several other niggly wee items at Lorimer & Findlay, 28 Jordanvale Ave, Scotstoun, G14 0QP. 0141 950 6688. Superb service & workmanship from a good old style garage with an owner Peter Lorimer who knows his Porsche stuff. All costs advised up front and any additional work advised prior to agreement, all at very reasonable hourly rates, even liaised with local upholsterer to repair seat bolsters. I know how hard it is to get someone to trust with your pride & joy so would recommend.