Topic: Briggs 23hp build

[Timdeere]

Iam not here for a racing mower build but figured I'd go to the professional's here.

Iam a john deere mechanic looking to get a few more horsepower out of my 18hp gator
I've already decided to punch out the block to fit the 40ci intek pistons.
Then put the rest of a 23hp in and a 35hp carb as a cherry on top

Just a few things: do I need the rods from the 18/20hp or the 23 to fit the intek piston wrist pins?
Iam not getting billet rods in atm if it breaks it breaks and we go oversized with new sleeves.

Also is it possible or advisable to advance the timing gear on the 23hp?
Have heard it being done on the 20 but don't know for sure.

Also tips to improve on the engine are welcome.
Would love to add a better oil pump if possible but don't know if there is maybe an electrical oil pump that's good?

ive got parts galore like a kid in a candy shop but just don't know what goes where to make the best engine

Thanks in advance

[TomL]

Don't waste your time.
Just replace it. Briggs has many choices.
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BIG BLOCK™ V-Twin Horizontal Shaft. Expertly engineered for one purpose: to get a lot more done throughout the day. Legendary, respected and proven, these ...

[Timdeere]

Replacing the engine would be the first thing I would do  If it wasn't a registered vehicle in a country where you are not allowed to swap engines and they even check the engine number every year.
even if i wanted to buy a replacement engine i can not just buy a briggs off the shelf but it needs to come off the exact same vehicle type and I need to get permission to do so and deliver all the papers of the other vehicle to the dmv.
All for a fee of course.

In short: no
Long story: welcome to israel