Reading between the lines it looks that the CNC is setup to make 4 sets at a time so like-set orders are preferred. PM me if you are interested. I'm not in a rush for mine as the engine is still apart.
Here's his reply:
<div class="ubbcode-block"><div class="ubbcode-header">Quote:] First of all, thank you for your interest in our products!
As to a volume discount, that would depend on the order "make up" as the filters that fit on HS6 equipped TR4s are not the same as the filters that fit on H6 equipped TR3s. Some of the later model TR3s also will need to change/reroute the overflow pipes of the H6 carbs in order for the filters to fit properly. The TR4s can utilize the 2.6" filter length while most TR3s will need the 1.6" length due to inner fender issues. So many of these cars have had various modifications over the years it is hard to come up with any iron clad rules as to what will fit what.
All that being said, if you are interested in an order of 4 sets (the discount applies in multiples of 4 - i.e. 4,8,12,16 etc.) I can offer you a 10% discount on a trial order of 4 sets providing they are not TOO different. Also some additional lead time is necessary on such an order - for Triumphs I think something on the order of a "fortnight".
Shipping is another area that would offer a considerable savings if the entire shipment could go to a single US location. Otherwise shipping would be about the same as advertised as we ship at our cost.[/QUOTE]