All Classified forums require a Site Supporter subscription. It is only $25 per year and you can buy and sell whatever you like on the forum. To become a Site Supporter, go to Your Profile and select "Paid Subscriptions."
Are you smogged where you are? If so, general rule is you can swap to a newer motor, but not an older. It is possible to do it, but the intake would have to be modified for anything prior to 1986. How much older are you talking about? what is wrong with it.?