Just listed the above "one-off" set on Ebay U.K........So, if you want to get the very best out of your Trabant, allied to tuned exhaust manifolds/exhaust, carb/s, etc...This will potentially be you means of accomplishing it! However, you will need to have some more machining/precision work carried out, to get them finished, as they are part-finished, with odd sized pistons, etc., supplied in the box! You will find them on EBAY UK, under my user name/tag of "visa1580". Lots of other n.o.s. items and used items being listed this month, in readiness for house move. I WILL send parcels worldwide, if required,...but, need any interested parties to get a definite QUOTE from me, BEFORE they bid and BEFORE the end of the auction, in fairness, to everyone. Good luck and hopefully all my surplus items, will find some good homes, as a result?! Happy motoring, everyone! Regards, Ian (Somerset, U.K.).