Recommendation: Batteries for 73T - and supplier

Can anyone recommend some batteries to suit a 1973 911T. Stock road car so looking for normal batteries not Optima etc.

An online, or other supplier that delivers, would be very helpful too.

Ryan - is it a twin battery ?
If so, mine are from Repco. I believe Ford Kia size (they look it up and it's in their book). Work fine

Thanks Paul, very helpful. It retains the twin battery setup.

Ps. I assume you mean Ford Ka?

sorry Ryan, yes, Ford Ka

Just found the invoice from 09/08/11:
Code: DIN44LMF Ford Ka
Price was $188 each (incl GST) plus $10 per item ordering fee

cheers Paul

I ordered a pair from http://www.easternbatteries.com.au/shop/ this morning and they were delivered at lunchtime!