<VV> Aftermarket convertible shoulder belts ?

[Steven]

I'd like to replace the lap belts with 3-point lap-shoulder belts in my LM 
convertible, preferably with retractors.  I'd also like to use all of the 
factory mounting points.  I've seen aftermarket units designed to have the 
retractor mounted in the rear, but I'd like to set it up with the retractor 
mounted where the outside lap belt mounts instead (I think this would be 
better looking).

Has anybody done this and if so, where did you get the  3-point belts?

Thanks,

Steve Brown

'69 Monza convertible (presently with factory seat belts)
'62 Rampside (with new 3 point seat belts / retractors)