The entire thread with all the current details is above. The Cliff's Notes version is below

River Run Rally II (in and around Portland Oregon)
begins @ Sellwood park May 23rd, be there by 10am, 1st car off 10:30am
no entrance fee
PRIZES included: carbon fiber trunk lid for AE86 (always sell it if you don't have an AE86), Holy Kakow Chocolate, a 4AGE piston that stopped working rather suddenly, Redline oil change, and *IF* you score a perfect score, you win a street ported 4AG head, and a set of 4AG Toda valve springs!!!!

For more complete specifics, look at the thread/link listed above