Where is the cheapest place to order AM parts online?

 

You have to hunt around. Aston Bits is good but inconsistent by nature since it depends on what cars they've been able to source from. HWM is a good bet but you have to phone them direct to get the best deal. Yes, in general ordering from the UK, even with shipping (although that may not always work w very bulky/heavy parts), is a better deal than from NA. You can also find kits of simple things (e.g. oil change) on eBay. Things like OEM special wheels you can sometimes source from eBay or specialty high volume tire/wheel vendors in the US. There are also a variety of aftermarket manufacturers of performance enhancements but you have not specified what you are looking for in your post.

 

This one?
http://www.hwmastonmartin.co.uk/

I imagine shipping would be expensive but lets see.

 

I have used www.scuderiacarparts.com - they are pretty quick and the best prices I have found

 

http://astonmartinbits.com/models/5-V8-Vantage
http://www.scuderiacarparts.com/

And if you need to know the part number:

https://www.astonmartintechinfo.com/...asterIndex.asp
https://www.astonmartintechinfo.com/...ctionIndex.asp