Okay thank you for your infos dogdays. I already did the distributor. I want to add headers at last (maybe before converter change). I want to change my Thermoquad for a HP Thermoquad from a 440 and adjust it.
@D_C: it's a 1974 Newport. On the internet it is said to be around 4600 lbs. I had to weigh it to register it but I don't know where the papers are. But it's pretty heavy...