I'd try car-part.com. Looks like there are many of them listed there and
some with close to your miles like this one:
Speedometer(See also Instr. Cluster)
Isuzu Trooper II(head only)-W/TRP,114K, SDO ONLYAU025P$75Brooks Auto Sales,
Inc. - PRP, PRP-MA USA-VA(Oilville) Request_Quote 1-800-552-6783
Motorsforum.com is a website by car enthusiasts for car enthusiasts. It is not affiliated with any of the car or spare part manufacturers or car dealers discussed here.
All logos and trade names are the property of their respective owners.