the guy refuses to cut my crank because he doesn't have explicit documentation of it being done before. so I need help, I need either:
a 6l crank (for the right price)
a long stroke race crank (for the right price)
documentation of someone stroking a 5.3
or anything else that might be able to help

 

If you are a member of Jag-lovers.org, try contacting Chad Bolles there. If you're not a member there, I can PM you his contact information. He's a good guy in North Carolina, and has been building modified Jag V12s for himself and others for longer than I can remember. He also has a couple Countachs, but, that's another story.

 

Chad is also a dealer for Isky cams, so he may be able to help you out on that front as well.

 

guy this must be a sign, I typed chad bolles into my phone.ans the search bar said I already had his number which I remember getting from my neighbor with a countach

 

CHAD BOLLES IS THE F*KING MAN. I just called him be was super helpfull and gave me so much advice and hes gonna give me the specs to make the crank and might sell me the 6l crank

 

I had a feeling he would be a help for you. Did you ask him about cams as well? If you haven't already seen it, you should also check out his YouTube video of his 2005 Maxton Mile run in his XJS:

 

yeah hes gonna set me up with a xm5 cam from isky. and uprated valve springs and such

 

Boy, I'm not a big V12 fan, but man that car sounds good.