Speedo Sensor Alternatives?

I have a 1998 F355 with speedo problems. Shop had the speedo itself rebuilt 3 months ago and that did not solve. I am told it is the sensor (part #149095). It has been back-ordered since that time and is still not available months later. I have checked all over the world for either a new or used one. No luck. My question is this - is there another sensor that is compatible? Another sensor that would do the job electronics-wise that could possibly be physically altered to thread into the hole? Any other ideas? I'm tired of driving around with my Garmin GPS functioning as the speedo.

Thanks for any suggestions! Also - should anyone happen to have a new or used one laying around, I'm interested in buying.

 

Thanks for all the info and suggestions. Very helpful! I was finally able to locate one through a dealer in Montreal after about 10 hours online once again and trying every avenue I could think of the other day. Should be here in a couple weeks. So I'm crossing my fingers. Have had a couple on order like this over the past few months, but they eventually called & said, "uhhhh can't get it after all". This one seems very legit though.

Mike (mseals) - if this one falls through, I'll definitely be getting in contact with you!

Thanks again, everyone.

 

I got word from Canada that mine arrived there and is now on the way to me! Should be here in a couple days. Cost was $310 + shipping. They were advertised in the $200-ish ballpark on various sites, but always back-ordered until "no one knows when". Been playing that game for many months now. So I have no problem with the extra cost to actually have the part. Now I'm just hoping that fixes the problem. Speedo head already rebuilt along with addressing the weak ribbon wiring issues, so surely this should fix it! Will report back with the results.

Jeff