What are the going prices for these intake?looking to buy.

They are in the 200. range give or take depending on condition and date code.

There is one on epay right now:

http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&sspagename=ADME%3AB%3ASS%3AUS%3A1123&viewitem=&item=220257704638

I paid $100 for mine about 6 months ago off ebay.

I've seen them for less but, being cast iron, shipping is usually about $50.00!

I bought one locally off of Craigs List for $ 75