I can not advise that anyone use this company. I had a short engine and head work done by this guy and all work is substandard, parts used are not as agreed with some not being replaced at all or second hand parts being used. Andrew Collinson could offer no reasons for this poor quality work or shocking amount of issues. Push rods bent by 4mm!!! Old cam bearings. Used main crank bearings. The list is huge. So was the amount of money paid for such poor work.
I will be taking this to the small claims court and will update this when there is further info -
DO NOT USE RETRO MINIS