i'd say find the 5 speed box best mod ive done soo far... after i built my engine and put the carbys on the 4speeds werent strong enough i belw 4 g/boxes in 2 months so i decided to put in the 5 speed box cost me $1200 and its lasted a good 4 months or so...
theyre hard to find and not easy on the wallet compared to a 4 speed which u can pick up for next to nothing but well worth the cash!!
i have a dogleg 5 speed spare in good condition not using it because of the reverse gear is up where first normally is and scared to take off backwards at traffic lights

CAR: 1200 sedan
MOTOR: A14 60/40 cam no headwork
GEAR BOX:std 5 speed
CLUTCH: std
DIFF: mitsubishi scorpion diff
TURBO/SUPER CHARGER/CARBY: twin 45mm webbers
EXHAST: 2 1/4"
WHEEL/TYRE package: 16"chrome 205/40r16 kumho ecsta

NOTE: CLUTCH WAS SLIPPING BIG TIME!!!

60 foot time: 2.522
1/4 mile time: 16.550
MPH/KPH: 106.28 KPH 66.04 MPH

is that a decent time.. i was hoping for 15's withput the slipping clutch!

mate im interested in the head light surrounds for the steel grill 0423702849 cheers my names mitch