[70 ls6 convert]

i just sent darren more pictures ,of the car,i found x3 on that back pannel,and there is a plate welded on the left rear frame rail,the numbers on the motor mounts are differnt then the ones they gave me #s3945508 right...394550 left...i couldnt find numbers on the radiator or the brak booster,not sure where to look,sence its a norwood car,does that mean it doesnt have a build sheet,i founf nothing behind the seat back,i found some change under the seat the latest date is 1980,so its been awhile sence anybodys been under the front seat..thanks for all the help..