First ...WOW I wasn't expecting this feedback, so thank you all.

This is a genuine Nissan Competition unit and I too would go for a H165 for the same price (who wouldn't) but if you have to run to FIA Appendix K or similar then you maybe stuck with the H145. Some of the Historic Rally guys in Europe have this problem, over 10 years ago one of them bought a GX exhaust manifold from me for around $300......so yes I think they would pony up $1000.

I plopped down $1200 for the H190 complete diff, why?? Try finding one with the 23 spline axles (roadster 510 wagon), it also had a 4.38 gear which is exactly what I need...............the 29 spline ones are a good bit cheaper BUT you need to have the axles shortened so by the time you convert everything it ends up about the same. Also with the alloy housing and alloy drums the weight is almost identical as the H145 steel unit. You can get a custom diff/axle for around $2300-$2500 complete. By the time I sell off the parts from the parts car that the H190 came out of I'll be into the set up about $950-$1000............much cheaper than custom unit from Speedway Engineering or Curry.

Now as for my H145 it's not worth $1000 in the US because we have options, probably $650 - $750 tops. (which is what I was thinking)

Thanks again guys,

Tom