Aftermarket Sprite seats

I'm building up a Bugeye for autocross and fun use--originality is ABSOLUTELY 
not a consideration.  What aftermarket seats (Reccaro-type)  are recommended 
and what is a good source for same?  I'd like a seat with good lateral 
support but not an ultra- tight fit.

I'll take replies offlist.
TIA--Michael Oritt

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