Slingshot gsxr Swingarm swap to 01-03 600

[Donjuan]

Need advice with a race bike build

swingarm swap/ upgrade????

Bike info:

1988 frame

1991 gsxr engine 750

V&H exhaust 

1999 gsxr 750 forks /triple/wheel

bmw 1000 rear shock

Swingarm 2003 gsxr 600 & stock 750 linkage ( fits using front old and new axle sleeves )

stock electronics / wiring 

???question about Swingarm swap??

1 when I use gsxr 600 lower link the shock it to long?

2 stock 750 lower link works fine but I'm worry about the geometry and ride ?

3. From what I've read I'll need to revalue the shock and change the spring rate ?

4 I also read dam54 sells an adapter plate that takes care of my problems 

if anyone has done this with any success, could please pass your wisdom along.

thank 

Image

1 2003 600 link, Swingarm & BMW shock

2 1991 750 link, 600 Swingarm, BMW shock

3 with dogbone mockup

4 600 Swingarm 

5 last is 1988 frame with 2003 Swingarm & lower link, gsxr1000 shock with upper shock spaced 64mm out

[CAPTAIN CRUNCH]

Eh Mate definitely go with adapter plate like what Dan makes as I went with k1-3 link like yours in photo 1with adjustable top shock mount and adjustable dog bones and link hits frame when hits real bad bump not nice, I'm in process of making plate, have u checked fula's sweet build he has lot of trial and error in his thread great read page 9,10,11 regarding his setup.

Regarding geometry and handling well I was still playing with it till I got engine probs so someone else will have to help ya there bud. love that bike in photo 5 kinda copied that fairing idea for my build,