[Looking for advice for tuning my gsxr 750 1990]

Mine is a 750L ok its a rat but hell soon as you dump that airbox you are in a world of hurt, mine had its airbox take away before i got it, then because of the way a new subframe was added there was no way i could get a airbox back, so i had to deal with k&n crap filters, and flat spot city, i had somebody play with it and got it to run ok but the flat spot at 4 is a knightmare hole, and one ive got to dig out off every ride 30 mph is shit, its iver to higher gear to keep out of 4 or to lower gear to keep under it. Every thing ive read about it is dont bother tuning just added a exhaust, 4° advancer, may be better filter and thats about it. Otherwise you can join me on flat spot hell... haha 

[Heres my rat/cafe racer]

Heres my iron pony of death, mummy and daddy wouldnt buy me a pony so i made one.. haha this is my 2018 look and this year iron ponies are in with a splash of ratness thats took years to make. "I looked, and behold, an gsxr horse; and he who sat on it had the name hewy; and Hades was following with him. Authority was given to them over a fourth of the earth, to kill with noisy exhausts and with fumes and with over fueling and by the wild beasts of the earth." 

 

[7/11 slabside in the making.]

Cool thanks that makes life easier.. now for the heavy lifting and shoe horning it in the frame.. 

Also do the swing arms swop? I heard the 1100 swinging link is better than having the 750 one? 

[7/11 slabside in the making.]

Cool thanks for that.. so can i keep the wiring loom inplace on the 750? And just replace the cdi with the 1100 one? Heres a pic of the 750 slabby that the engine is going into.. the bottem pic is of another slabby ive got and is in the middle of a cafe racer make over, all the bits came off the bike that had the upside downers plus it has the wheels off a 1st slingshot with a r1 rear shock. The story and bikes ive got is mentle one, all bought to make one slabby look cool which was bought over 14 years ago after missing a bike on here that i didnt buy with everything done to it....  haha

[7/11 slabside in the making.]

Hello i used to be a member a few years ago when i got into my slabsides, where i ended up with having 4 slabsides, and a rat cafe racer slingshot. 

So over the years ive been getting one together out of all the others with full fairing and have it a little special, ie upsidedowners rear shock wheels the usual mods, but heres the thing i tattooed a friends wife for a gsxr1100 slabside so i can put the motor into my 750 slabside frame, so could people point to the treads where it has been done before, so i can get to know what needs to be done.. ive strip out the 11 now its time to strip out the 750 that ive just got back together. 

Heres a few pics 1st is the 1100 the next is my daily hack gsxr750 sling, the last pic is the mess my workshop is..