Rims for Lotus 51a?

[gramleth]

I have a great looking 1967 Lotus 51a.

I need some spare steel rims:

Rear - 13" x 5 1/2" with 4 1/4" BC (diameter for 4 bolts)
Front - 13" x 4 1/2" with 3 3/4" BC (diameter for 4 bolts)

I think they were normally coming from Lotus Elan or Ford Cortina.

Please let me know if you have any leads for me.