Got two responses one minute after posting Esslinger injun swap.

FYI:

Esslinger Engineering
1436 Potrero St
South EL Monte, CA 91733

626 444 4919

These guys live/eat/breath ford 2.3's.  They are honest and won't BS.  I
have no affiliation with them, just have friends that race 2.3 turbos and
the name comes up frequently.  Call them, they should send you a catalog
free.

cya, PSD.