currently have an F20 with a turbo on it. blew up tonight sad day. so im deciding on how to fix. if i should just put in a built f20 or k swap. my question being will the k swap accept my turbo kit (manifold ect...) or will it not hook up to the k

 

The cylinder heads are ever so different. Sadly your F stuff in terms of the exhaust manifold etc will not swap over. Also be warned that it takes a fair bit of work and parts to make a K work inside of a s2000 - I would research this topic heavily before jumping in. While the cost of a K looks enticing - getting it in there and running like a stock F is not for the faint of heart.