detroit diesel

[pascal bertram]

hello

anybody could said to a lost french guy what is the exact model and the power of the twin detroit diesel engine he got on the old bertram 42 recently bought ?
671 with turbo - Twin engine detroit diesel 671 in line avec compresseur et injecteur of 90 model 6-71(1062-4310)serial 6A287260 PORT et 6A287354 STBD
- boite transmission Allisson manufactured by detroit diesel allisson Ratio 2.1
serial 42708number 6770016 PORT M20Ra on the right and on the left serial 42416 number 6770015 M20L
- propeller shaft 1.3/4 inches

thanks a lot
kind regards

pascal coldefy