/6 now 318

i bought a 71 swinger and it originally had a 225 /6 in it and i am trying to put my 318 out of my old dart into it but the k-member is different... im sure you all already know this but i just found out how different it is..... i can't put the old k-member in there cause it was bent up pretty bad... and is in bad shape.... my question though is..... i have heard that there are special engine mounts that will mount the 318 into the larger 225 k-member... if anyone knows where i can find these mounts please give me a link or if anyone knows how i can fit it in without problems..... thanks i do appreciate it and can't wait to get my swinger running

Toby