I have 1989 964 Carrera 4 in mint condition with 54k miles. The car has not been driven much and the cylinder base seals need to be replaced so the motor is coming out. Will doing a top end really be worth it? It's about $3000 more to do the total top end and I am having a world renowned shop do the work. Any thoughts? Will doing the top end really help my value? Here is a picture of her.