Pm me you address, I will send you a honer. I bought it about 25 years ago when I owned a MK 2 Jag. I haven't had the need to use it since nor will I ever. The 4.2 Jag has the same size bore as the 202. The piston rings are interchangeable. Trust me from someone who knows they are idiot proof. Make sure you use a Lubricant like wd 40
Keith
Keith