Drive one... they're pretty qucik.. mid 15 second quarter mile... TRD makes a supercharger kit for them, and there are many other upgrades as well... .people are hitting 300rwhp with just the s/c and 400rwhp with s/c and bolt ons / computer upgrades.
absolutely no need for a 4.7... its doesn't make much more power than a 4.0 and weighs alot more... with teh s/c, the 4.7 cant keep up....

Take one for a test drive... they have lots of balls. Way quicker than a 3.4....

89 4Runner
3" BL, M/T locks, 33"bfg mt, bilstein, Kayline, tubebumper, toyotafiberglass panels
TBI: Elocker,3.4 w/ORS,b+b,S2Sstg2cams,arias pistons,P+P intake,TRDs/c,URDpullies+7th,downey headers,MAPECU2,WEGO WB, SupraMAF,walboro255,stg4clutch, EPaOo2 sim