I think you would be wise to have someone dismantle the car and get it back to original state, engine out, oil drained, oil cooler cleaned and checked for flow. Especially if little bits of filter have been floating around the oil system! Then build back up from there!
Sounds like they have stolen your manifolds, and rad too
Take as much advice from this forum as possible. Everyone who has posted really know their stuff and we have all had trouble with bodgers and the only way to fix it is to start from scratch!
I think you're looking at a lot of money in labour to sort this.
Good luck pal ! Look forward to seeing this get sorted! get stuck in!








