you can get any rb26 rb25 or rb20 parts state side, phase2 has anything you want. i have a friend with a rb26dett with the rb25 tranny all the supporting mods and mount kit ect, in a 240sx coupe its not as impressive as you think , only built they ....friends gt35 sr20 with maxwork vg tranny ect, with less money into blows the rb away. call mckinneymotorsports ive been to there shop before and they have an rb26 in a hardbody and every 240 at there shop , they can pre use the rb mount kit for the 240sx to fit the truck , thats if you you have deep pockets, rb26dett is 4,200 then you will need to use a rb25 tranny, which is another 800$ ......1200 for the mount kit , wireharness unless you do yourself is 300$ all for 280 hp.