Jdm_02

So I bought this little guy and love it. Wondering if there are any swap possibilities for less than 6k, preferably far less but I'm already saving up. I've seen the couple of Busa, b16 swaps online but was wondering if anyone experienced has any insight on the possibilities of even a D swap and the extent of shop work it would take besides fabbing mounts and pairing the tranny. I'd love to know if pairing a Honda 1000cc or even 600cc CBR engine would be possible with saving the stock tranny? If not what would you pair it to transmission wise? I don't have the ability to do this myself so a shop would have to do most of it, which I know will be a tad pricey. Thanks for any info!