3rd log on pontoon

[Bowtie41]

Hello all,I spent the better part of the last 4 hrs reading posts pertaining to my problem with no luck so I joined .I have a '88 Lowe 24' pontoon I bought last year.It had an 88ho engine,and a man in Tenn pushed it to about 145 hp now,used a v6 lower with custom prop and it's fabulous.Well,a neighbor also purchased a 24' this week to rebuild.The conversation turned to tritoons,and he happened to know a mutual friend was selling his 16' cheap,so we bought it for both of us to have a log.I'm looking for info as to the parameters needed around the transom.Is 16' acceptable,or will it need to be altered?Dimensions from transom to back of tube would be great.Both of our boats have a "D" shaped tubes,but his are about 2" shorter than mine,as well as the log I want to use.Thought of rails to level it to outer tubes,but is it neede?I'm a fairly good fabricator,I just need specs before I start.Thanks in advance for any input.Hey We'll be getting rid of a great 8x12 deck,railing,wood looks great,Thanks Again !!

Kirk