the cobra radiator will work just as good as the fluidyne, its just not as flashy. Id rather have an OEM cobra than a fluidyne. Quality wise you cant beat OEM..
the 4v and 2v fluidynes are the same. So yes it will fit
i ordered mine through ford for $235. you can get then through some radiator companies that sell to shops for around $220-250. Depends on the company though