Gentleman thank you both for responding. Again I am building my own plinth and will be using the massive bearing and platter from my old Cranfield Rock Turntable. The Excalibur arm is the first arm offered in a commercially available Rock turntable, so it's old school with minimum amenities. It is the most basic tone arm you could buy back then (1982). That is the reason I am looking for an interim arm until I can afford one of the great arms (SME, etc). I am going inexpensive right now due to my budget.
Dave, I note you use the inexpensive SA-250 ST and appear to have great success with matching it to several great cartridges to include the Shelter 501. My only concern is that it does not have a removable head and I have problems installing cartridges in this type of setup. I have longed for the opportunity to purchase an arm were I can remove the head to replace the cartridge. However it looks as if you have done a great job mixing and matching and that's wonderful.
BeoBloke, I think it negates the price of the SA-370H if you had to have all that extra work done, rewiring and other things. Actually I am looking for an arm that I can use right out of the box that will mate with a good cartridge and play well so that I don't cringe. I thought the Jelco SA-370H or the SA 250 would do the trick but .........