if you email me at home ,
all4trux@snip.net . I'll try to pinpoint a year for you. As far as the tach repairs I think I went to a Yahoo search hand put in "automotive tach* repairs" i emailed everyone that came up. I copied and pasted a general question about repairs after i tild them what it was . something like .
Hello, I found you company in a genral internet search for tach repairs . I have a blah blah from a blah blah that reads a little slow . appx XXX RPM at XXXXrpm . I was wondering if you think you might be able to fix it and what your minimum charge is .
I got back many repies. DAVE
__________________
"been there, done that, ruined the T-shirt".
2007 LBZ GMC Sierra, ECSB
2006 LM7 RCSB Silverado
98 Vortec project.
94,3500,6.5L 4L80
81 SWB GMC POS finally gone
73 Pinto, stock, w/CragarSS's-eww

84,C10 SWB-Yella,stock
86 K10 SWB-Red, hopped up 305,4/S
LOTS of Cummins trucks.