Have a good friend that had a 42 with them. Didnt like them he said. He had another 42 without them and said he liked the non box 42 much better.

There are a few 45's with them also. Mine isnt one of them.

what was your propshaft height on your boat? with and without shorties. I know a few boats that spaced theres 1'' and picked up better handling and speed, in rough water they seem to make the boats fly more level. my friends 31 sutphen single went from 90 to 94. his propshaft is 3 3/8'' below the keel which is short. my two boats are now 3'' and 5''. going testing next week with the saber 28. its height was 7 1/2'' would only run 65 with hp500,then old owner put a 2'' shortie pick up 3mph to 68. I'll post what the konrad ace will do. its close to a imco in looks.